opentelemetry-sdk: fix values for process.executable resource attributes

[xrmx]

Description

Per registry [1]:

• process.executable.name should be the base name of the executable
• process.executable.path should be the full path of the executable

Now for name we send the full path and for path only the parent directory.

[1] https://opentelemetry.io/docs/specs/semconv/registry/attributes/process/

Spotted this when looking at #5459

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Test A

Does This PR Require a Contrib Repo Change?

• Yes. - Link to PR:
• No.

Checklist:

• Followed the style guidelines of this project
• Changelogs have been updated
• Unit tests have been added
• Documentation has been updated

[xrmx]

Would appreciate if anyone on windows can double check what does sys.executable report there.

[JacksonWeber]

Would appreciate if anyone on windows can double check what does sys.executable report there.

Confirmed on Windows: sys.executable returns the full path to the interpreter, for example C:...\python.exe. So, this change will set the name to python.exe and the path to the full executable path, as expected.